Yed Prior
HR 6056 · HIP 79593 · δ Oph
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 2.75 mag
- Parallax
- 19.06 mas → about 171.1 light-years away
- Spectral type
- M1III
- Right ascension
- 243.5864°
- Declination
- -3.6943°
- Designation
- HR 6056
- Bayer designation
- δ Oph
- HIP number
- 79593
- IAU name adopted
- 2016-11-06
- Name language
- Arabic
- Name origin (IAU)
- Originally from the Arabic word al-yad, "the hand," used in the Arabic Almagest in describing these stars. yed was applied as a star name to δ Oph in medieval times. Then in recent times, this application was extended to include both δ and ε, with the addition of the Latin distinctions for "foremost" and "hindmost," respectively.
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · checked 2026-11-03 ↗
Related
Constellation
In everyday life
- Light from this object takes about 171 years to reach Earth — the light you see tonight left around AD 1855 (official distance ÷ speed of light).
- At magnitude 2.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -3.7° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
Worked out from this object's official values.